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ra1l [238]
2 years ago
12

Real Numbers: Mastery Test

Mathematics
1 answer:
quester [9]2 years ago
4 0

Answer:

exuse me but i dont see the questions

Step-by-step explanation:

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15 cm<br> 15 cm<br> 16 cm<br> 20 cm<br> 57 cm<br> What is the perimeter of the polygon?
Natasha2012 [34]

Answer:

C.

Step-by-step explanation:

15 x 16=240 x 2= 480

57 x 20= 1140

1140 + 480 = 1620

6 0
2 years ago
Which of the following are solutions to the equation below? Check all that apply. 4x2 + 4x + 1 = 9​
Vilka [71]

Answer:

4x^2 + 4x + 1=9

4x^2 + 4x - 8=0

Dividing both sides by 4

x^2 + x -2=0

It can be written as

x^2 + 2x - x - 2=0

x(x+2) -1(x+2)=0

taking (x+2) as common on LHS

Then, (x+2)(x-1)=0

Now first equate x+2=0  ie x=-2

then                 x-1=0 ie x=1

Therefore, x has two values(roots)

that is -2,1

4 0
3 years ago
7.5g of sugar is needed for every cake made how much sugar is needed for 10 cakes
lana [24]

Answer:

75 g

Step-by-step explanation:

i think as this a recipe propotional so you have to find how much sugar is needed for 1.g


4 0
3 years ago
Are the following equations equivalent why or why not Branilist for people who explain
wariber [46]

Answer:

Yes, they are equivilant

Step-by-step explanation:

5(3m+2p)-4m = 13p+11m-3p

Distribute 5: 15m+10p-4m = 13p+11m-3p

Combine like terms: 15m+(-4m) = 11m ; 13p+(-3p) = 10p

11m+10p = 11m+10p

6 0
2 years ago
Using the graph below, what is the best estimate of how much gas is used on a 250-mile car trip if the equation for the line of
Katen [24]

i think it is c not sure

7 0
3 years ago
Read 2 more answers
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